Cyclopentadienone [ I ] dimerises in the nascent state at 5 "C. The reaction is not reversible and gives the product (I) (endo- configuration [2]). In the presence of excess ethylene glycol in benzene, the dimer (I) yields the monoketal (II), m.p. 94-95 "C, crude yield 94 %. The position of the keto
✦ LIBER ✦
Vitamin-E-Chinon-nickel(0)-cyclooctadien(1,5)
✍ Scribed by Dr. G. N. Schrauzer; H. Thyret
- Publisher
- John Wiley and Sons
- Year
- 1962
- Tongue
- English
- Weight
- 123 KB
- Volume
- 74
- Category
- Article
- ISSN
- 0044-8249
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**On the Temperature Dependence of the ^13^C‐NMR. Spectra of [5‐6‐η‐(1Z,5E)‐Cyclooctadien] and of (lZ, 5E)‐Cyclooctadiene** The activation parameters of the conformational ring inversion process (simultaneous rotation around the C(3), C(4) and C(7), C(8) bonds; __cf__. Scheme 1) of the title compou